5.5

CVE-2018-20449: linux linux_kernel

CVSS: 5.5v3.0MediumModified
AliasesUBUNTU-CVE-2018-20449DEBIAN-CVE-2018-20449
Published 04-04-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-20449 is a medium (CVSS 5.5) vulnerability in linux linux_kernel. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
0.42%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-04-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The hidma_chan_stats function in drivers/dma/qcom/hidma_dbg.c in the Linux kernel 4.14.90 allows local users to obtain sensitive address information by reading "callback=" lines in a debugfs file.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.42%

Chance of exploitation in the next 30 days

Percentile

35%

Versus all other CVEs

30-day change

0.00 pp

From 0.42% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.42%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu10 products
  • linux-azure< 4.15.0-1013.13~16.04.2
  • linux-azure-fdeAll versions (No fix recorded)
  • linux-gcp< 4.15.0-1014.14~16.04.1
  • linux-gkeAll versions (No fix recorded)
  • linux-hwe< 4.15.0-24.26~16.04.1
Debian1 product
  • linux< 4.15.4-1
Linux1 product
Netapp1 product

4 vendors · 13 products

References

8 links